The 3.7i finally solves what used to be Maggie's biggest tradeoff: true ribbon speed without true ribbon's usual quirks.
Jonathan Valin of The Absolute Sound said it "successfully addresses three issues that have long plagued 'true-ribbon' Maggies."
Magnepan's true ribbon tweeter has always been prized for its speed and detail, but pairing it cleanly with the rest of a speaker used to come with real compromises. The 3.7i was built specifically to close that gap — seamlessly integrating the ribbon tweeter with quasi-ribbon bass and midrange drivers so you get that signature ribbon speed without the historical trade-offs that came with it.
That engineering work shows up most at lower volumes, where a lot of speakers start losing detail and dynamic range long before you'd expect. The 3.7i holds onto both, plus it substantially reduces what longtime Maggie listeners call "Maggie grain" — a subtle texture that used to be part of the true-ribbon experience. Combine that with the full-range scale and boxless openness every Magneplanar is known for, and you get a speaker that reviewers consistently point to as a genuine best buy in the lineup.
If you want true ribbon speed without the caveats that used to come attached to it, this is the speaker that solved that problem.